Revert "refactor(env): remove env variable reading, reaspon: meta env is statically analyzed and does not work importing from library"

This reverts commit f30c39d.

Author: adaptive-shield-matrix

src/env/readEnvVariable.ts

@@ -0,0 +1,62 @@
+import { createError, createResult, type Result } from "~utils/result/Result"
+
+export function readEnvVariable(name: string): string | undefined {
+  // Check Backend/Bun/Node.js/Convex process environment first
+  if (typeof process !== "undefined" && process.env) {
+    return process.env[name]
+  }
+  // Check Frontend/Vite-style import.meta.env
+  if (typeof import.meta !== "undefined" && import.meta.env) {
+    return import.meta.env[name]
+  }
+  return undefined
+}
+
+export function readEnvVariableOrThrow(name: string): string | undefined {
+  // Check Backend/Bun/Node.js/Convex process environment first
+  if (typeof process !== "undefined" && process.env) {
+    const variable = process.env[name]
+    if (!variable) throw new Error("process.env." + name + " not set or defined")
+    return variable
+  }
+  // Check Frontend/Vite-style import.meta.env
+  if (typeof import.meta !== "undefined" && import.meta.env) {
+    const variable = import.meta.env[name]
+    if (!variable) throw new Error("import.meta.env." + name + " not set or defined")
+    return variable
+  }
+  throw new Error("neither process.env." + name + " nor import.meta.env." + name + " matches")
+}
+
+export function readEnvVariableResult(name: string): Result<string> {
+  const op = "getEnvVariableResult"
+  // Check Backend/Bun/Node.js/Convex process environment first
+  if (typeof process !== "undefined" && process.env) {
+    const variable = process.env[name]
+    if (!variable) {
+      return createError(op, "process.env." + name + " not set or defined")
+    }
+    return createResult(variable)
+  }
+  // Check Frontend/Vite-style import.meta.env
+  if (typeof import.meta !== "undefined" && import.meta.env) {
+    const variable = import.meta.env[name]
+    if (!variable) {
+      return createError(op, "import.meta.env." + name + " not set or defined")
+    }
+    return createResult(variable)
+  }
+  return createError(op, "neither process.env." + name + " nor import.meta.env." + name + " matches")
+}
+
+export function readEnvVariableBackendResult(name: string): Result<string> {
+  const op = "readEnvVariableBackendResult"
+  if (typeof process !== "undefined" && process.env) {
+    const variable = process.env[name]
+    if (!variable) {
+      return createError(op, "process.env." + name + " not set or defined")
+    }
+    return createResult(variable)
+  }
+  return createError(op, "neither process.env." + name + " nor import.meta.env." + name + " matches")
+}